Dell 3020 MT Owner's Manual download pdf (Page 25)

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4. Unthread and release the I/O Panel, data cable and USB data cable from the clip on the computer.

5. Remove the screw that secures the I/O panel to the computer.

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Dell OptiPlex 3020–Mini Tower 1
Owner's Manual 1
Notes, Cautions, and Warnings 2
Contents 3
Working on Your Computer 5
Turning Off Your Computer 6
Recommended Tools 9
System Overview 9
Removing the Cover 10
Installing the Cover 11
Removing the Intrusion Switch 12
Removing the Front Bezel 12
Installing the Front Bezel 13
Removing The Expansion Card 13
Installing the Expansion Card 14
Memory Module Guidelines 15
Removing the Memory 15
Installing the Memory 15
Removing the Hard Drive 16
Installing the Hard Drive 17
Removing the Optical Drive 17
Installing the Optical Drive 18
Removing the Speaker 18
Installing the Speaker 18
Removing the Power Supply 19
Installing the Power Supply 20
Removing the Processor 21
Installing the Processor 21
Removing the System Fan 21
Installing the System Fan 22
Removing the Power Switch 23
Installing the Power Switch 24
Removing the I/O Panel 24
Installing the I/O Panel 26
System Board Components 27
Removing the System Board 28
Installing the System Board 30
System Setup 31
System Setup Options 32
Table 3. System Configuration 33
Table 4. Video 34
Table 5. Security 34
System Password 35
Computrace Service 35
Absolute Software 35
Table 6. Secure Boot 36
Table 7. Performance 37
Table 8. Power Management 37
Table 9. POST Behavior 38
Table 11. Maintenance 39
Table 12. Cloud Desktop 39
Updating the BIOS 40
System and Setup Password 41
Disabling a System Password 43
Diagnostics 45
Troubleshooting Your Computer 47
Beep Code 48
Error Messages 48
Technical Specifications 53
Table 25. Internal Connectors 55
Table 26. Controls and Lights 55
Table 27. Power 56
Table 28. Physical 56
Table 29. Environmental 56
Feature Specification 57
Contacting Dell 59

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Dell 3020 MT Owner's Manual Page 25

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